This blog will mostly contain notes and photos of birds and bird behavior observed and photographed in my backyard patch, East Gippsland, and on birding journeys around Australia.

Thursday, 16 March 2017

Glossy Black-Cockatoo

Glossy Black-Cockatoos (Calyptorhynchus lathami) in
Victoria are confined to far East Gippsland. Within this area they are further confined to
forests with good stands of Allocasuarina littoralis (Black She-oak),
the cones providing seeds for this specialised feeder. This strong association, between bird and tree,
has given rise to one of its other names, Casuarina Cockatoo. More information
on this bird can be found at: http://www.birdlife.org.au/bird-profile/glossy-black-cockatoo

Finding
Glossy Black-Cockatoos in East Gippsland is a little like looking for a
needle-in-a-haystack or rather a Black She-oak grove. The Morcombe field-guide provides
a good description of their behaviour, “Small parties, commonly up to 10
birds, spend most of the day quietly feeding in the foliage of casuarina trees,
the only sound being the busy clicking of bills as they demolish the hard,
woody seed capsules.”. So, the best method to find them is to drive slowly
along forest tracks where there are abundant stands of Black She-oak and hope
that some birds are feeding near the road and they flush as you approach.
Stopping in particularly good patches of casuarina to look and listen will also
increase your chances of finding some.

Sightings
of Glossy Blacks west of the Snowy River is somewhat rare and their most
westerly occurrence (possibly vagrant) is in forest not far north west of Lakes
Entrance. Most recorded sightings in East Gippsland are around Mallacoota where
there is relatively good access to forests and a good number of observers
compared with the remote country west to the Snowy River.

By good
luck we recently managed to flush a pair from a food tree beside Lagoon Track in
State Forest south west of Newmerella and not far west of the Snowy River.
Glossy Blacks are confiding birds and when flushed from food trees will often just
fly a short distance to a higher vantage point in a eucalypt and then sit and
watch the intruders. Such was the case for the pair in the following photos. Unfortunately,
I was forced to take photos looking into the sun however I had plenty of time
to make camera adjustments to deal with the light conditions and further adjust
images on the computer later.

Please click on photos to enlarge.

The female Glossy Black-Cockatoo in the Black She-oak which the pair flushed from – note the abundant seed cones.

The male (left) and female (right) Glossy Black-Cockatoos flew from the feeding tree to a perch nearby.

The Male Glossy Black-Cockatoo.

The female Glossy Black-Cockatoo – note the patches of yellow around the neck and face.

Note the small rounded crest visible on the male at the right.

They settled down to some grooming.

Glossy Blacks pair bond for life and stay close together.

Glossy
Black pairs often groom one another and no doubt search for and remove
parasites, especially around the head and neck area, which can’t be reached
with their own bills. It is moving to watch this behaviour and from a human
perspective it is hard not to see them as “love birds”. The following photos
show some mutual grooming.

Highly
specialised feeders, Glossy Black-Cockatoos are vulnerable as they depend on a
few species of Allocasuarina, and during the breeding season, suitable old
trees with nest hollows in proximity to a suitable food source. In the ACT and
SA (there is a small isolated population on Kangaroo Island) they are listed as
Endangered and in Victoria, NSW and Queensland they are listed as Vulnerable.